NationalNational PestPest AlertAlert Sugarcane Planthopper Perkinsiella saccharicida (Kirkaldy, 1903) (Hemiptera: Delphacidae) The sugarcane planthopper is an adven- tive species, first reported in the western hemisphere in Ecuador in 1966, and in the continental US in 1982. The species has since become broadly distributed in the sugar-growing regions of North, Central, and South America. The sugarcane plant- hopper had previously become established Frontal view in Hawaii where it substantially impacted of Perkinsiella Hawaiian sugar production and was saccharicida. Top view of Perkinsiella saccharicida. ultimately brought under control through saccharicida are the introduction of natural enemies. The about 4.5–6.0 mm sugarcane planthopper vectors sugarcane in length (large for Fiji disease, but this disease has not been a delphacid, which reported in the western Hemisphere. are mostly less than The genus Perkinsiella consists of 35 species, 4 mm). Their anten- Nymph of mostly in the Indomalayan ecozone. Eight nae are flattened, Perkinsiella species in the genus are known to occur on their face distinctly saccharicida on sugarcane, but only one of these, Perkinsiella bicolored, and their sugarcane saccharicida, is widespread. wings with diffuse smoky markings, Side view of Perkinsiella saccharicida. Distribution becoming stronger apically. The male Perkinsiella saccharicida appears to be native to Australia and terminalia have rather flattened parameres and bear a pair of pro- probably the Indomalayan region, including Malaysia, Indonesia, jections just in front of the parameres. Philippine Islands, Papua New Guinea, India, Sri Lanka, Taiwan, and southern China. It is adventive in southern Africa, Mada- Biology gascar, and numerous islands. It was recorded in Hawaii in 1900, and first recorded in the Americas in Ecuador in 1966 (evidently Females deposit, elongate-cylindrical, slightly curved eggs (1.0 × from Hawaii), Peru in 1967, and Florida in 1982. It has since been 0.35mm) in small groups of 2–12 (average 4.5) on either side of recorded in Georgia, Louisiana, Texas, Mexico, Costa Rica, Colum- the leaf, mainly along the midrib, sheaths, and stock internodes bia, and Cuba, but is undoubtedly present throughout the sugar- beneath the leaf surface, with the apex of the egg protrud- growing regions of North, Central and South America. ing. The eggs are covered by a white waxy material, which turns dark a few days later. Females can lay up Description to 300 eggs over an approximately 30 day adult lifespan. Eggs incubate 2–5 weeks before Delphacid planthoppers can be recognized by the presence of a hatching. There are 5 immature instars, large, flattened spur on the apex of the hind tibiae. Adult Perkinsiella lasting approximately 32 days at Mymaridae). Other parasitoids reported for Perkinsiella sacchari- cida are Aprostocetus beatus (Perkins) and A. formosanus (Timber- lake) (Hymenoptera: Eulophidae) and the dryinids Acrodontochelys vitiensis (Perkins), Gonatopus krombeini Olmi, and Pseudogonato- pus hospes Perkins. The entomophagus fungi Metarhizium anisopliae (Metsch.) Sorokin has been observed controlling adults. Spur on hind leg of Perkinsiella saccharicida. Survey Perkinsiella saccharicida can most often be found on leaves and 25°C average temperatures. There are multiple generations per stalks, especially in the whorl or growing region, by inspection. year. Populations were reported highest in October and November in Louisiana, and during the ‘summer months’ in Florida, but the species may be found throughout the year. Adults are usually fully For more information on the sugarcane planthopper, visit our web winged (macropterous), but adults with short, non-functional wings site at ncipmc.org/action/alerts/perkinsiella.php can be common. Flying adults are very mobile and may be attracted to lights in large numbers. For information about the Pest Alert program, please contact Laura Iles, Damage co-director of the North Central IPM Center, at [email protected]. Adult feeding activities cause damage to the plant, with subsequent 1862 Land-Grant Universities reddening and desiccation of the leaves. Damage may also be Auburn University University of Alaska University of Arizona University of caused by growth of sooty mold on honeydew excreted by the plan- Arkansas University of California Colorado State University University of Connecticut University of Delaware University of the District of Columbia thoppers and from ovipositional punctures. Perkinsiella saccharicida University of Florida University of Georgia University of Guam University is a vector of Sugarcane Fiji disease virus Fijivirus (Fiji disease, Fiji of Hawaii University of Idaho University of Illinois Purdue University Iowa leaf gall) (Reoviridae) (FDV), but this disease has not been reported State University Kansas State University University of Kentucky Louisiana in the Americas. This disease has been reported distribution Austra- State University University of Maine University of Maryland University lia, Fiji, Madagascar, Papua New Guinea, New Hebrides, Philip- of Massachusetts Michigan State University University of Minnesota Mis- pines, Samoa, Thailand. Sugarcane infected with Fiji disease shows sissippi State University University of Missouri Montana State University leaf distortion and galls, stunting and death of meristematic tissue, University of Nebraska University of Nevada University of New Hampshire Rutgers New Mexico State University Cornell University North Carolina resulting in severe yield reductions. Fiji disease is managed by host State University North Dakota State University Ohio State University plant resistance and vector management Oklahoma State University Oregon State University Pennsylvania State University University of Puerto Rico University of Rhode Island Clemson Natural enemies University South Dakota State University University of Tennessee Texas A&M University Utah State University University of Vermont University Natural enemies have been effective in controlling Perkinsiella of the Virgin Islands Virginia Polytechnic Institute & State University saccharicida. The control of this species in Hawaii mark one of Washington State University West Virginia University West Virginia State the early biocontrol success stories. Specialist natural enemies for University University of Wisconsin University of Wyoming. delphacids particularly include Mymaridae, Credits Dryinidae (Hymenoptera), Pipunculidae Author: Charles Bartlett (University of Delaware, Dept. Entomology) (Diptera), and Strepsiptera; however, the egg predator Tytthus mundulus (Breddin) Photos: Kimberley Shropshire (University of Delaware; specimen photos); Robert Magarey (BSES Limited, Indooroopilly Queensland, Australia; (Miridae) is credited with being highly nymph, live adult, Fiji gall) effective at reducing Perkinsiella populations Funding: This work is supported by the Crop Protection and Pest Manage- in many places where it has been problem- ment Program (2014-70006-22486) from the USDA National Institute of atic, including Hawaii. In 1983, Tytthus Food and Agriculture. mundulus was introduced into Florida to keep populations of Perkinsiella saccharicida at the lowest possible level. Other natural enemies reported from Florida include View of male other Tytthus species and egg parasites genitalia. in the genus Anagrus (Hymenoptera: .